Movie Making Manual/Foley
Foley sound is the technical term for the recreation of sound effects for a movie in a studio. Named after Jack Foley, the inventor of this technique, it entails replacement and addition of sound in a film. Foley sound is created by an industry professional known as the foley-artist. Usually this is done in a recording studio known as a Foley Stage with the film being played back and interlocked to an audio recording device while the artist watches the picture and uses sometimes unusal articles and techniques to match picture.
Foley sounds may include as much as a: the dry smack of a punch, the revving engine of a car, or the crashing waves of the sea.
External link: "The art of Foley" http://atlantamusicgroup.com/foley1.html